このスライドは、以下の論文の解説です。
Ramped versus sniffing position for tracheal intubation: A systematic review and meta-analysis. Am J Emerg Med. 2020
この論文では、気管挿管の姿勢としてRamp positionとSniffing positionを比較したランダム化比較試験のシステマティックレビューとメタ解析を行っています。
9. 方法
対象文献: 16歳以上成人の気管挿管適応
Ramp vs Sniffing のRCT
検索媒体: MEDLINE, CENTRL, Embase
Clinical trial.gov, WHO register
1次検索: Title, Abstractで評価
2次検索: Full textで評価
2人の独立した評価者
シミュレーション研究は除く
*Conflictは3rd reviewersとの協議で解決する
10. 検索式の一例
MEDLINE via Ovid
#1. exp Laryngoscopy/ or exp Laryngoscopes/
#2. exp Intubation, Intratracheal/ or intubat$.ti,ab.
#3. (sniff$ or ramp$ or head$ or body$ or position$).ti,ab.
#4. ((randomized controlled trial or controlled clinical
trial).pt. or randomized.ab. or placebo.ab. or clinical trials
as topic.sh. or randomly.ab. or trial.ti.) not (animals not
(humans and animals)).sh.
#5. (1 or 2) and 3 and 4
17. Study Collins, 2004 Lee, 2015 Semler, 2017
Design / Allocation unit Parallel /Individual patient Parallel /Individual patient Parallel /Individual patient
Country USA Korea USA
COI/ Funding source Unknown Unknown Declared
Setting OR in university hospital
OR in university and branch
hospital
ICU in four tertiary care centers
Inclusion criteria
BMI ≥40kg/m2 Expected difficult intubation Patients ≥ 18 years of age
Undergoing elective bariatric
surgery
Undergoing general anesthesia
Undergoing tracheal intubation
in ICU
Exclusion criteria None
Unstable cervical spine
Too emergent to perform
randomization
Rapid sequence intubation
Clinicians' judge for the safe
procedure
Total No of cases 60 193 260
Ramp/Sniffing Sniffing Ramp Sniffing Ramp Sniffing Ramp
The number of allocated 27 33 97 96 130 130
Age, median [IQR]/ mean
+-SD
43.3+-10.0 41.9+-8.9 50.7+-9.8 51.8+-8.1 56 [45-64] 56 [47-65]
Male, n, (%) 2 (7.4%) 6 (18.2%) 48 (49.5%) 49 (51.0%) 79 (60.8%) 79 (60.8%)
BMI median [IQR]/
mean +-SD
46.9+-7.1 49.9+-6.9 28.7+-5.9 29.6+-5.0
27.3
[24.0-32.6]
26.7
[23.9-33.3]
Indication for intubation
General anesthesia for Bariatric
surgery
General anesthesia Various
Performer The same one anesthesiologist
Residents or attending
anesthesiologists
Pulmonary and critical care
medicine fellow
Video-Laryngoscopy for
first attempt
None None 33 32
Second operator required None Unknown 1 4
Characteristics